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农学学报 ›› 2021, Vol. 11 ›› Issue (2): 74-78.doi: 10.11923/j.issn.2095-4050.cjas2020-0052

• 农业工程/农业机械/生物技术/食品科学 • 上一篇    下一篇

党参茎基腐病镰孢菌鉴定及其对杀菌剂的敏感性研究

漆永红1(), 李敏权2, 曹素芳2, 蒋晶晶1, 李雪萍1, 李青青1, 徐美蓉3, 李继平1()   

  1. 1甘肃省农业科学院植物保护研究所,兰州 730070
    2甘肃省农业科学院林果花卉研究所,兰州 730070
    3甘肃省农业科学院农业质量标准与检测技术研究所,兰州 730070
  • 收稿日期:2020-05-19 修回日期:2020-09-21 出版日期:2021-02-20 发布日期:2021-02-24
  • 通讯作者: 李继平 E-mail:qiyonghong920@gsagr.ac.cn;lijiping@gsagr.ac.cn
  • 作者简介:漆永红,男,1978年出生,甘肃秦安人,副研究员,博士,主要从事经济作物病害研究。通信地址:730070 甘肃省兰州市安宁区农科院新村1号 甘肃省农业科学院植物保护研究所,Tel:0931-7614844,E-mail:qiyonghong920@gsagr.ac.cn
  • 基金资助:
    甘肃省农业科学院科研条件建设及成果转化项目“黄芩根腐病害关键防控技术研究”(2020GAAS25);国家重点研发计划“特色经济作物化肥农药减施技术集成研究与示范”(2018YFD0201100);甘肃省重点人才项目“党参根腐病综合防控技术集成、示范推广与人才培养”(2019RCXM072);嘉峪关市科技计划“嘉峪关市设施蔬菜根腐病综合治理技术研究与应用”(18-20)

Identification of Codonopsis pilosula Crown Rot Disease and Its Sensitivity to Fungicides

Qi Yonghong1(), Li Minquan2, Cao Sufang2, Jiang Jingjing1, Li Xueping1, Li Qingqing1, Xu Meirong3, Li Jiping1()   

  1. 1Institute of Plant Protection, Gansu Academy of Agricultural Sciences, Lanzhou 730070, Gansu, China
    2Institute of Fruit and Floriculture Research, Gansu Academy of Agricultural Sciences, Lanzhou 730070, Gansu, China
    3Institute of Agricultural Quality Standards and Testing Technology, Gansu Academy of Agricultural Sciences, Lanzhou 730070, Gansu, China
  • Received:2020-05-19 Revised:2020-09-21 Online:2021-02-20 Published:2021-02-24
  • Contact: Li Jiping E-mail:qiyonghong920@gsagr.ac.cn;lijiping@gsagr.ac.cn

摘要:

为明确党参茎基腐病害的病原、致病性和优势病原种类及其对不同杀菌剂的敏感性,采用组织分离法进行病原菌分离,并根据其培养性状、形态学和分子生物学特征进行鉴定,同时采用平皿菌丝生长抑制法测定不同药剂的敏感性。结果表明,该病害的病原为尖孢镰孢菌(Fusarium oxysporum)、茄病镰孢菌(F. sonali)和木贼镰孢菌(F. equiseti),其中尖孢镰孢菌为优势种。室内致病性测试结果表明,3种镰孢菌均可引起党参茎基腐病,其中尖孢镰孢菌的致病性最强,显著高于其他2种菌。供试药剂对菌丝生长均有抑制作用,苯醚甲环唑对3种镰孢菌具有很强的抑制活性,同时3种镰孢菌对吡唑醚菌酯的敏感性较高。

关键词: 党参, 茎基腐病, 镰孢菌, 病原鉴定, 杀菌剂, 敏感性测定

Abstract:

To clarify the pathogen, pathogenicity and dominant pathogen species of Codonopsis pilosula crown rot disease and their sensitivity to different fungicides, the pathogen was isolated by tissue isolation method and identified according to its culture traits, morphology and molecular biological characteristics. Meanwhile, the sensitivity of different fungicides was determined by mycelium growth inhibition method. The results showed that the disease pathogens were identified as Fusarium oxysporum, F. sonali and F. equiseti. The dominant species was F. oxysporum. Pathogenicity testing showed that the three species could cause C. pilosula crown rot disease, F. oxysporum had the strongest pathogenicity, and its disease rate and disease index had a significant difference from those of the other two. Laboratory toxicity test of different fungicides to the mycelia growth of the three species showed that difenoconazole fungicide had the strongest inhibition activity, and the three Fusarium species had the highest sensitivity to pyraclostrobin fungicide.

Key words: Codonopsis pilosula, Crown Rot Disease, Fusarium spp., Pathogen Identification, Fungicides, Sensitivity Testing

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